Filling wind control for spinning frames



Dec. 25, 1934. H, BROOKS ETAL 1,985,851

FILLING WIND CONTROL FOR SPINNING FRAMES Filed Sept. 19, 19:52 Sheets-Sheet 1 62? En 615 j 1,? 1 -4 7 73 "T 6'6 62 i 22 73 1a 26' Z2 95 J1 j I Q 2 f1 19 INVENTORS Haw/ 552 001 0 and Paul fiiZ-eez/eq,

Y/ MM ATTORNEYS Dec. 25, 1934. H. E. BROOKS El AL 1,985,851

FILLING WIND CONTROL FOR SPINNING FRAMES Filed Sept. 19, 1932 3 Sheets-Sheet 2 )1") Hum.

INVENTOR.

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. ATTORNEYS Dec. 25, 1934. oo s r 1,985,851

FILLING WIND CONTROL. FOR SPINNING FRAMES Filed Sept. 19, 1932 3 Sheets-Sheet 3 INVENTOR. Harry Brooks and Paa ifiJieez ea,

ATTORNEYJ n all Patented Dec. 25, 1934 CONTROL FOR SPINNING FRAME FILLING WIND P'ATENT OFFICE Harry E. Brooks and Paul B. Reeves, Columbus,

Ind., assignors to Reeves Pulley Company, r Columbus, Ind., a corporation of Indiana Application September 19, 1932, Serial No. 633,776

22 Claims. (Cl. 118-32) The present invention relates to spinning frames, and more particularly to driving means 'for spinning frames of the type which effect a filling Wind or combination filling wind of the bobbins on the frames. The primary object of the invention is to provide means for driving a spinning frame at variable speeds to effect a filling wind. A further object of the invention is to provide driving means of such character as to drive the spinning frame slowly at the beginning of the cycle; gradually increase the speed as the thread is built up to form inverted cone-surfaces adjacent the lower portions of the bobbins; drive the frame at a constant, comparatively high speed as the thread is built up to form cylindrical surfaces over the mid-portions of the bob-- bins; and gradually reduce the speed of the spinning frame as the thread is wound to form cone surfaces adjacent the upper ends of thebobbins. A further object of the invention is to provide means of the character described which shall be fully automatic in operation. A still further object is to provide means of the character described which shall be entirely mechanical. Still further objects of the invention will appear as the description proceeds.

To the accomplishment of the above and related objects, our invention may be embodied in the form illustrated in the accompanying drawings, attention being called to the fact, however, that the drawings are illustrative only, and that change may be made in the specific construction illustrated and described, so long as the scope of the appended claims is not violated.

Fig. 1 is a perspective view of an end'portion of a spinning frame with which is associated driving means constructed in accordance with the present invention;

Fig. 2- is a broken perspective view' of a portion of the driving means:

Fig. 3 is a broken perspective, taken upon a larger scale, of a portion of the speed-controlling -mechanism;

Fig. 4 is a horizontal section of a portion of the structure illustrated in Fig.3;

Fig. 5 is a rear elevation of the speed-control- .ling mechanism, parts being shown in vertical it will be seen that we have illustrateda spinning frame indicated generally at 10 and comprising a frame 11 upon which are mounted a plurality of bobbin spindles 12. A ring rail 13 is associated with said bobbin spindles, a traveler 14 carried by said ring rail being associated with each of said spindles. The thread or yarn 15 is led from the rovings 16 through the travelers to the bobbins, and is built up on the bobbins as at 17. In Fig. 1, it will be obvious that a portion of a filling wind has been completed. As will be clear to those skilled in theart, the ring rail 13 is continuously reciprocated, the length of stroke of the ring rail being constant, but such stroke continously changing its position. In other words, it may be said'that each upward movement of the ring rail is slightly longer than the succeeding downward movement so that, while each upward movement of the ring rail is of the same extent as the preceding upward movement thereof, each succeeding upward movement will bring the ring rail to a new high position.

The ring rail is reciprocated by a rod or plunger 18 which, in turn, is driven by the main shaft l9 of the spinning frame through an oscillating shaft 20 having an arm 21 to which saidrod 18 is connected.

The shaft 19 carries, immediately beyond the frame 11, a coned disc 22 which is rigidly secured to the shaft. Splinedon the shaft 19, and facing the disc 22, is a second coned disc 23, said disc 23 being constantly urged toward the disc 22 by a spring 24 sleeved on the shaft 19 and bearing against the disc '23, and against a collar 25. It

will be seen that the discs 22 and 23 cooperate to form an expansible V-pulley.

A second V-pulley 26 is mounted upon the shaft 2'? of a motor 28, saidmotor beingcarried by a plate 29 which is slidably mounted in a guideway 30 formed in a base 31.

An edge-active belt 32 connects the pulley 26 to I drive the discs 22, 23; and it will be obvious that,

as the pulley 26 is moved away from the discs 22 and 23, the disc 23 will be forced away from the disc 22, thereby reducing the effective diameter of the expansible V-pulley and increasing the rate of rotation of the shaft 19. correspondingly,

the pulley 26 is moved nearer to the discs 22, 23,

the spring 24 will force the belt to move outwardly between the discs 22 and 23, thereby increasing theeffective diameter of the expansible v-pulley and reducing the speed of the shaft 19. The operation of organizations of this kind is so well known as to need no further description. f

It will be obvious that, while we have shown and described an organization in which the expansible v-pulley is mounted upon the spinning frame main shaft 19 and the non expansible vpulley is mounted upon the motor shaft, this arrangement might be reversed without in any way' modifying the operation of the organization.

Referring to Fig. 5, it will be seen that the plate 29 carries a lug 33 which is formed with a threaded aperture in which is engaged a screw 34, said screw being suitably joumaled for rotation and 31, said bracket providing a pivot pin 37 upon which is pivoted a lever 38 carrying a pin 39 at its outer end. At its inner end, the lever 38 is pro- -vided with a notch 40 in which is received a pin 41 carried at the inner end of a lever 42 mounted to swing upon a pivot pin 43 likewise carried by the bracket 36. Said lever 42 is formed with a yoke portion 44 which embraces a clutch element 45 splined on the screw 34. The yoke portion 44 of the lever 42 is-provided with a pair of pins 46 which project into and engage in a circumferential groove or channel 47 formed in the element 45. Extensions 46' of the pins 46 form anchors for one end of each of a pair of springs 48, the opposite ends of said springs being anchored to the pin 39. This arrangement is most clearly shown in Fig. .4.

As will be seen from the above, the levers 38 and 42, together with the springs 48, form a spring toggle associated with and, to an extent, control- 1 ling, the clutch element 45.

At its upper endthe clutch element 45 is provided with a series of teeth 49 adapted to mesh withteeth 50 formed at the lower end of one member 51 of a one-way clutch mounted at the upper end of the screw 34. The member 51 is freely rotatable upon the screw 34 and is held against axial movement thereon by a collar 52 pinned to said screw. The other member 53 of said one-way clutch is formed to provide a chamber in which are received one or more elements adapted for driving engagement with the hub 54 of the memberv 51, said chamber being closed by a plate 55. The one-way clutch may take any desired known form. It may be of the ratchet type or of the cam and roller type, or of any other well known type, it being understood that movement of the member 53 in one direction will cause corresponding movement of the member 51, whereas movement of the member 53 in the opposite direction will not aflect the member 51.

At its lower end the clutch element 45 is formed with a second series of teeth '56 adapted to mesh with teeth 57 formed upon a member 58 of a second one-way clutch freely rotatable upon the screw 34 and held against reciprocation thereon by a collar 59 pinned to said screw. The member 60 of the last-mentioned one-way clutch is like-- wise formed to provide a chamber for receiving elements engageable with thehub 61 of the member 58.

In the embodiment illustrated, the are so arranged that, when the member 53 is moved in a counter-clockwise direction, as viewed from above, the member 51 will bedriven thereby, but when saidmember 53 is moved in a clockwise direction, the member 51' will be unaffected. When the member 60 is driven in a clockwise direction the member 58 will be carried therewith, but when the member 60 is moved in a counter-clockwise direction the member 58 will be unaffected.

An arm 62 is rigid with the member 63 and projects substantially radially therefrom; A link 63 has one end addustably connected to the arm 62, and has its opposite end adjustably connected to an arm 64 mounted upona rock shaft '65 journaled in the base 31. Similarly, an arm 66 rigid with the member 60 projects substantially radially therefrom, and one end of a link 67 is adjustably connected to said arm 66, the opposite end of said link being connected to a second arm 68 mounted upon the rock shaft 65. As is clearly shown in Fig. 1, the arms 62, 64, 66, and 68- and the links 63 and 67 are all positioned above the base 31. vAdjacent the bottom of the base 31 there is connected to the shaft.65 an arm 69. A link 70 has one end adjustably connected to the free end of the arm 69, and said link 70 has its opposite end adjustably connectedto an arm 71 carried by the oscillating shaft 20. It will be obvious that, as the shaft 20 oscillates to reciprocate the ring rail 13, the oscillating movement of said shaft will be transmitted through' the arm 71, link '70, arin 69, rock shaft 65, arms 64 and 68, links 63 and 67, and arms 62 and 66, 'to the one-way clutch members 53 and 60. 1 j

The base 31 mounts a part-annular bed 72 provided with a part-annular tongue 73 upstanding therefrom. A control ring 74 is mounted upon said bed, said ring being provided with a groove receiving the tongue 73, whereby said ring is guided. As is clearly shown in Fig. 4, at a suitable point, said ring 74 is provided with a slot 115 in which is received a .pin 76 carried by the arm 66:, The slot 75 and pin 76 are so associated that movement of thefarm 66 during upward movement of the ring rail 13 will cause the pin 76 to engage against the forward end of the slot 75 to move the control ring 74 slightly in a clockwise direction as viewed in Fig. 4.

The control ring 74 carries a block 77 and a cam member 78. The cam member 78 is formed with a cam surface 79 and with a .flat table 80 for a purpose later to be described. The block A rod 86 is pivotally connected to the outer end of the lever 42, and said rod extends downwardly therefrom, terminating in an inturned finger 87. The plate 29 carries a hub 88 in which is adjustably mounted a pin 89; and said plate likewise carries a second hub 90 in which is adjustably mounted a pin 91, the flnger 87 being positioned in the paths of the pins 89 and 91.

Preferably, the base 31 carries an arm 92 which, in turn, carries a bearing block 93 for supporting the outer,end of the shaft 19.

The operation f the 'above-desoribedmechanism is as followz-After thespinning frame has been threaded, the operator starts' his machineby energizing the' motor 28. It is to be understood tha.t the parts are in the positions.

illustrated in Fig. 5, the plate '29 being adjacent the upper end of its stroke, so that the motor shaft 27 is positioned, with relation to the shaft 19 '0 as to provide the proper speed. ratio between said two shafts for starting a filling wind.

As the spinning frame, operates, the shaft 2.0 oscillates to reciprocate the ring rail 13 in the manner hereinbefore described. Upon each oscillation of the shaft 20, the arm 62 is oscillated through the linkage chain 71, 70, 69, 65, 64, 63, 62. Thus the member 53 is oscillated, and each time the member 53 is moved in a counterclockwise direction, it carries with it the member 51, but the member 51 is not affected by clockwise movement of said member 53. It will thus be obvious that, as the shaft oscillates, the member 51 is driven, step-by-step, in a counter-clock'wise direction. The parts being in the positions illustrated in Fig. 5, wherein the teeth 49 of the clutch element 45 are meshed with the teeth 50 of the member 51, such step-by-step rotation of the member 51 will cause a corresponding step-by-steprotation of the screw 34. Since the screw 34 is a right-hand screw, counterclockwise rotation thereof will cause gradual, step-by-step downward movement of the plate 29. As said plate 29 is moved downwardly, it carries with it the motor 28 and the motor shaft 27, thereby increasing the distance between the shafts 27 and 19, decreasing the effective diameter of the expansible V-pulley mounted on the shaft 19, and increasing the speed of the shaft 19. As long as the motor 28 is operated and as long as the clutch element 45 is meshed with the member 51, the speed of rotation of the shaft 19 will be gradually increased. V

. Eventually, the pin 89 will engage the finger 87 and, as the plate 29 continues to move downwardly, suchengagement willcause the free end of the lever 42 to be depressed, whereby the clutch element 45 will be slowly moved downwardly on the screw 34. The pin 89 is so adjusted that it will move the spring 48 just past its deadcenter position when a suitable high speed is reached. Such a speed is ordinarily reached approximately at the time when the building up of the inverted cone surfaces on the bobbins is completed. As the spring 48 moves past its deadcenter position, it will snap the teeth 49 of the clutch element 45 out of meshing engagement with the teeth 50 of the member 51.

During the above described operation of the mechanism, the control ring 74 has been moved from its starting position, in which the pointindicated by the construction line 94 in Fig. 4 registered with the nub 84, to a position in which a portion of the block 77 underlies said nub 84. Consequently, when the spring 48 snaps the clutch element 45 out of engagement with the member 51, the nub 84 comes into contact with the upper surface of the block 77 to hold the elements in the positions illustrated in Fig. 6, wherein the clutch element 45 stands in a neutral position. It will be obvious that, as operation of the mechanism continues, the screw 34 will not be rotated, since the clutch element 45 is not in engagement with either of the elements 51 or 58.

The block 77 is of such extent that, as the ring 74 continues to.rotate under the influence-of the pin 76, said block 77 will hold the clutch element 45 in its neutral position for a predetermined time. Ordinarily, it is found to be desirable to begin to reduce the speed of the spinning frame approximately at thetime when the mitting the toggle mechanism to move under the influence of the spring 48 to throw the nub 84 into contact, or substantially intocontact, with the upper surface of the ring 74. Obviously, such movement of the toggle mechanism will throw the teeth 56 of the clutch element 45 into engagement with the teeth 57 of the member 58.

It will be remembered that the two overrunning clutches are oppositely-active and that, as the member 60 is moved in a clockwise direction, it carries the member 58 with'it, while counterclockwise movement of the member 60 does not affect, the member 58. Consequently, continued operation of the machine will cause a step-bystep clockwise rotation of the screw 34 which will result in upward movement of the plate 29. Such upward niovement of the plate 29 will obviously decrease the speed of rotation of the shaft 19.

Continued operation of the mechanism causes the cam surface 79 of the cam member 78 to ride under the nub 84. whereby the outer end 85 of the lever 42.is gradually elevated. As the formation of the cone surfaces at the upper ends of the bobbins is completed, said nub 84 rides onto the table 80 of the cam member 78, the elevation of" said table 80 being substantially the same as the elevation of the upper surface of the block 77. Thus, when the nub 84 rides onto the table 80, the clutch element 45 is brought into the position illustrated in Fig. 6 wherein the clutch element 45 is disengaged from bothmembers 51 and 58. The operator .now stops his machine and removes the filled bobbins.

Before again starting his machine, the operator rotates the" hand wheel in a clockwise direction to bring the plate 29 back up to its starting position. As the plate 29 is elevated, thepin 91 engages the finger 87 to move the arm 42 past the dead-center position of the spring 48, whereupon said spring 48 snaps the clutch element again into engagement with the member 51.

We claim as our invention:

1. The combination with a main shaft, of means for driving said shaft at variable speeds,

said means including a driver, means connecting said driver to drive said main shaft, and

- an element movable to vary the speed ratio between said driver and said shaft, and means driven by said main shaft and operable to shift said movable element, said last-mentioned means including two oppositely active one-way clutches,

means associated with said clutches and operable to render the same alternatively effective, and automatic means controlling said last-named means.

2. The combination with a main shaft, of a base, a motor slidably mounted on said base and having a shaft, an expansible Vpul1ey mounted on one of said shafts, a V-pulley mounted on the other of said shafts-and an edge-active'belt connecting said shafts, rotatable means associated with said motor and operable, upon rotation in one direction, to move said motor away from said main shaft, and upon rotation in the opposite direction, to move said motor toward said main shaft, two oppositely-active one-way clutches associated with said rotatable means, an oscillating member driven by said main shaft and connected to drive said clutches, and an element associated with said clutches and movable to connect the same alternatively to drive said rotatable means.

3. The combination with a main shaft, of a base, a motor slidably mounted on said base and having a shaft, an expansible v-pulley mounted on one of said shafts, a V-pulley mounted on the other of said shafts, and an edge-active belt connecting said shafts, rotatable means associated with said motor and operable, upon rota- (tion in one direction, to move said motor away from said main shaft, and upon rotation in the opposite direction, to move said motor toward clutch. 7

said main shaft, two oppositely-active one-way clutches associated with said rotatable means, an oscillating member driven by said main shaft and connected to drive said clutches, an element associated with said clutches and movable to connect the same alternatively to drive said rotatable means, and means movable with said motor for actuating said last-named element, at times.

4. In combination, a rotatable element, two

oppositely-active one-way clutches mounted on said element, and each consisting of an outer member .and an inner member, both members of each clutch being rotatable with respect to said element, means for oscillating one member of each clutch, and an element drivingly connected to said rotatable element but shiftable with respect thereto, said last-named element being alternatively engageable with theother l [6.In combination, a rotatable element, two

oppositely-active one-way clutches mounted on said element, and each consisting of an outer member and an inner member, both members of each clutch being rotatable with respect tosaid element,means for oscillating one member of each clutch, an element 'drivingly connected to said rotatable element but shiftable with respect thereto, said last-named element being alternatively engageable with the other member of each clutch, a control member associated with said last-named element and operable to control the position of said last-named element, at times,

and means associated with said oscillatingmeans for driving said control member. 1

'7. In combination, a rotatable element, a

member associated witlrsaid elementand connectedto be shifted upon rotation ofsaid element, two. oppositely-active one-wayclutches mounted, onsaid element, each consisting of an I enter member and an inner member, both members of each clutch rotatable with respect to said element, means for oscillating one member ot each clutch, an element .drivingly connected to said rotatable'element but shiitable with respect thereto to engage, alternatively, with the other member of each of said clutches, a spring toggle associated with said last+named element, a control member associated with said last-,-

named element, means associated with said oscillating means to, drive said control member,

and means associated with said first-named member for shifting said last-named element in both directions past-'dead-center position of said toggle, said control member being effective, at

times, to move said last-named element out of driving engagement with one of said clutch members.

8. In combination, a rotatable element, a mem- I ber associated with said element and connected to be shifted upon rotation of said element, two oppositely-active one-way clutches mounted on said element, each consisting of an'outer member and an inner member, both members of each clutch being rotatable with respect to said eletrol member associated with said last-named ele-.

ment, means associated with said oscillating means to drive saidv control member, and means associated with said first-named member for shiiting said last;named element in both directions past dead-center position of said toggle,

said control member being efiective, at times, to, hold s'aid last-named element out of driving,

engagement with one of said clutch members.

9. In combination, a rotatable element, a member associated with said element and connected to be shifted upon rotation of said'element, two oppositely-active one-way clutches mounted on said element, each consisting of an outer member and an inner member, both members of each clutch being rotatable with respect to said element, means for oscillating one member of each clutch, an element drivingly connected to said rotatable element but shiftable with respect thereto to engage, alternatively, with the other member of each of said clutches, a spring toggle associated with said last-named element, a control member associated with said last-named element, means. associated with said oscillating means to drive said control member, and means associated with said first-named member for shifting said last-named element in both directions past dead-center position of said toggle, said control member being effective, at times, to hold said last-named element out of driving engagement with one of said -cl utch members, and, at other times, to move said last-named element out o! drivingengagement with said clutch member.

, -10. In combination, a rotatable element, a

member associated with said element and con- 'nectedto shifted upoir rotation of said elemehthtwo oppositely-active one-way clutches mounted on said element, each consisting of an outer member. and an inner member,- both members of each clutch beingrotatable with respect to said element, means for oscillating one member of each clutch, an element drivingly connected to said rotatable element but shiftable with respect thereto to engage, alternatively, with t e othermember of each of said clutches, a spr' toggle associated with said last-named element,

a control member associated with said last-"named elements, means associated with-said oscillating means to drive said control member, and means associated with said first-named member for shifting said last-named element in both directions past dead-center position of said toggle, said control member being eflective, at times, to move 'said last-named element out of driving engagement with one of said clutch-members, but

being inefiective to move said last-named elementpast a dead-center position of said toggle.

11. In combination, a screw, a member threadedly associated with said screw and shiftable upon rotation of said screw, two oppositely-active one-way clutches mounted on said screw, each consisting of an outer member and an inner member, both members of each clutch being rotatable with respect to said screw, means for oscillating one member of each clutch, a clutch element splined on said screw and alternatively engageable with the other member of'each of said clutches, a spring toggle associated with said clutch element, a ring mounted for rotation about the axis of said screw, means connecting said oscillat ng means to rotate said ring, and means carried by said shiftable member for moving said clutch element, in both directions, past dead-center position of said toggle, said ring being effective, in certain posit.ons, to hold said clutch element in neutral position against the tendency of said spring toggle.

12. In combination, a screw, a member threadedly associated with said screw and shiftable upon rotation of said screw, two oppositely-active one-way clutches mounted on said screw, each consisting of an outer member and an inner member, both members of each clutch be'ng rotatable with respect to said screw, means for oscillating one member of each clutch, a clutch element splined on said screw and alternatively engageable with the other member of each of said clutches, a spring toggle associated with said clutch element, a ring,mounted for rotation about the axis of said screw, means connecting .said oscillatng means to rotate said ring, and 7 means carriedby said shiftable member for movmember, both members of each clutch being ro-- tatable with respect to said screw, means for oscillating one member of each clutch, a clutch element splined on said screw and alternatively engageable with the other member of each of said clutches, a spring toggle associated with said clutch element, a ring mounted for rotation about the axis of said screw, means connecting said oscillating means to rotate said ring, means carried by said shiftable member for moving said clutch element, in 'both directions, past dead-center position of said toggle, a block on said ring positioned, at times, in the path of a portion of said toggle to hold said clutch element in neutral position, and a cam on said ring and spaced from said block, said cam being effective, as said ring is driven, to shift said clutch element out of engagement with one of said clutch members.

14. In combination, a screw, a member threadedly associated with said screw and shiftable upon rotation of said screw, two oppositely-active one-way clutches mounted on said screw, each consisting of an outer member and an inner member, both members of each clutch being rotatable with respect to said screw, means for oscillating one member of each clutch, a clutch element splined on said screw and alternatively engageable with the other member of each of said clutches, a spring toggle associated with said clutch element, a ring mounted for rotation about the axis of said screw, means connecting said oscillating means to rotate said ring, means carried by said shiftable memberfor moving said clutch element, in both directions, past deadcenter position of said toggle, a block on said ring positioned, at times, in the path of a portion of said toggle to hold said clutch element in neutral position, and a cam adjustably mounted on said ring and normally spaced from said block, said cam being effective, as said ring is driven, to shift said clutch element out of engagement with one of said clutch members.

15. The combination with a main shaft, of a base, a driving shaft mounted on said base and shiftable transversely of its own axis, an expansible V-pulley on one of said shafts, a V-pulley on the other of said shafts, and an edge-active belt connecting said pulleys, a screw threadedly associated with said driving shaft and operable, upon rotation, to shift said shaft, two oppositely-active one-way clutches mounted on said screw, each consisting of an outer member and an inner member, both members of eachclutch being rotatable with respect to said'screw, means driven by said.

main shaft for oscillating one member of each clutch, a clutch element splined on said screw and shaft for moving said clutch element, in both directions, past dead-center position of said toggle, said ring being effective, in certain positions, to hold said clutch element in neutral position.

16. The combination with a main shaft, of a base, a driving shaft mounted on said base and shiftable transversely of its own axis, an expansible V-pulley on one of said shafts, a V-pulley on the other of said shafts, and an edge-active belt connecting said pulleys, a screw threadedly associated with said driving shaft and operable, upon rotation, to shift said shaft, two-oppositelyaotive one-way clutches mounted on said screw, each consisting of an outer member and an inner member, both members of each clutch being rotatable with respect to said screw, means driven by said main shaft for oscillating one member of each clutch, a clutch element splined on said screw and alternatively engageable with the other member of each of said clutches, a spring toggle associated with said clutch element, a ring mounted for rotation about the axis of said screw, means connecting said oscillating means to rotate said screw, means shiftable with said driving shaft for moving said clutch element, in both directions, past dead-center position of said toggle, a block on said ring positioned, at times, to cooperate with a portion of said toggle to hold said clutch element in neutral position, and a cam on said ring effective, at times, to shift said clutch element out of engagement with one of said clutch members.

17. In combination with a spinning framecomprising a main shaft, a plurality of bobbin spindles, a ring rail associated with said spindles, driving connections between said main shaft and said spindles for rotating said spindles, and driving connections between said main shaft and said ring rail whereby, upon rotation of said main shaft, said ring rail is constantly reciprocated through a stroke of constant length but of changing position, means for driving said main shaft at variable speeds toreifecting a filling wind of bobbins carried by said spindles, said means comprising a base, a driving shaft mounted on said base and shiftable transversely of its own axis, an expansible v -pulley on one of said shafts, a V-pulley on the other of said shafts, and an edge-active belt connecting said pulleys, a screw threadedly associated with said driving shaft and operable, upon rotation, to shift said shaft, two oppositely-active one-way clutches mounted on said screw, each consisting of an outer member and an inner member, both members of each clutch being rotatable with respect to said screw, means driven by said main shaft for oscillating one member of each clutch, a clutch element splined on said screw and alternatively engageable with the other member of each of said clutches, a spring toggle associated with said clutch element, a ring mounted for rotation about the axis of said screw, means connecting said oscillating means to rotate said screw, and means shiftable with said driving shaft for moving said clutch element, in both directions, past dead-center position of said toggle, said ring being effective, in certain positions, to hold said clutch element in neutral position.

18. In combination with a spinning frame comprising a main shaft, bobbins connected to be rotated by said main shaft, a ring rail, and means driven by said main shaft for effecting relative reciprocation between said bobbins and said ring rail, means for driving said main shaft at variable speeds for effecting a filling wind of said bobbins, said means comprising a variable-speed transmission including an element rotatable to vary the output speed of said transmission, and means driven by said main shaft for causing step-by-step rotation of said rotatable element during an initial period of an operating cycle, said means being ineffective, during a subsequent period, to rotate said element, and operating to cause opposite step-by-step rotation of said rotatable element during a later period of such cycle.

19. In combination, a base, a carriage slidable on said base, a motor mounted on said carriage and having a shaft, a driven shaft, pulleys on said shafts, one of said pulleys being expansible, and a belt providing a driving connection between said pulleys, an element movable in opposite directions to shift. said carriage correspondingly in opposite directions on said base, and means for controlling said element, comprising an oscillating shaft, means connecting said driven shaft to oscillate said oscillating shaft, one-way drive mechanism connecting said oscillating shaft to move said element in one direction, one-way drive mechanism connecting said oscillating shaft to move said element in the opposite direction, and means automatically operable during the cycle of operation of the organization to render said respective one-way drive mechanism alternatively effective.

20. In combination, a base, a carriage slidable on said base, a motor mounted on said carriage and having a shaft, a driven shaft, pulleys on said shafts, one of said pulleys being expansible, and a belt providing a driving connection between said pulleys, an element movable to shift said carriage on said base, and means for controlling said element, comprising an oscillating shaft, means connecting said driven shaft to impart to said oscillating shaft an oscillatory stroke'of constant length but of varying position, oneway drive mechanism connecting said oscillating shaft to move said element step by step in one direction, one-way drive mechanism connecting said oscillating shaft to move said element step by step in the opposite direction, and means associated with said one-way drive mechanisms .and operable automatically, during the cycle of operation of said oscillating shaft, first to render one only of said one-way drive mechanisms efiective to move said element, then to render both of said one-way drive mechanisms ineffective to move said element, and then to render the other only of said one-way drive mechanisms effective to move said element.

21. In combination with a spinning frame having an oscillating shaft, a prime mover, variable speed mechanism connecting said prime mover to drive said spinning frame and including an ele ment movable to vary the speed ratio between said prime mover and said spinning frame, means driven by said oscillating shaft for shifting said element during an initial period of the spinning cycle to increase the speed of said spinning frame, means actuated by speed-increasing movement of said element to a predetermined degree to arrest such increase, means operable after an intermediate period of the spinning cycle to initiate a speed-decreasing effect of said first-mentioned means, and means actuated by speed-decreasing movement of said element to a predetermined degree to arrest such decrease.

22. In combination with a spinning frame having an oscillating shaft, a prime mover, a driven shaft connected to drive said spinning frame,

means for shifting said prime mover toward and away from said driven shaft, means connecting said prime mover to drive said driven shaft and operable to increase the speed of said driven shaft upon movement of said prime mover away from said driven shaft and to decrease the speed of said driven shaft upon movement of said prime mover toward said driven shaft, mechanism driven by said oscillating shaft and operable, during an initial period of the spinning cycle, to shift said prime mover gradually away from said driven shaft, means associated with said prime mover and operable, upon movement of said prime mover in said direction to a predetermined degree, to render said mechanism temporarily ineffective to shift said prime mover, means operable, after an intermediate period of said cycle, to render said mechanism effective to shift said prime mover gradually toward said driven shaft, and means associated with said prime mover and operable, upon movement of said prime mover in said lastnamed direction to a predetermined degree, to render said mechanism again temporarily ineffective to shift said prime mover.

HARRY E. BROOKS. PAUL B. REEVES. 

